摘要:
SiGe or SiC films are selectively grown on source/drain regions, followed by selectively growing silicon. A monocrystalline film having a high dislocation density or a polycrystalline film can be grown in growing the silicon film by making the C or Ge concentration higher than a predetermined level. The silicon layer on each of the source/drain regions is not monocrystalline or, even if monocrystalline, has a high density of dislocation. Therefore, the silicon film formed thereon is in the form of a monocrystalline silicon film having a high dislocation density or a polycrystalline silicon film. It is possible to suppress an impurity diffusion to reach a deep region caused by channeling of ions generated in the doping step by means of an ion implantation.
摘要:
Disclosed is a semiconductor device comprising a semiconductor substrate, a gate electrode, a first insulating film formed between the semiconductor substrate and the gate electrode, and a second insulating film formed along a top surface or a side surface of the gate electrode and including a lower silicon nitride film containing nitrogen, silicon and hydrogen and an upper silicon nitride film formed on the lower silicon nitride film and containing nitrogen, silicon and hydrogen, and wherein a composition ratio N/Si of nitrogen (N) to silicon (Si) in the lower silicon nitride film is higher than that in the upper silicon nitride film.
摘要:
Hexachlorodisilane (Si2Cl6) is used as a Si raw material for forming a silicon nitride film that can be widely different in the etching rate from a silicon oxide film. The silicon nitride film is formed by an LPCVD method.
摘要:
A system for determining dry cleaning timing, includes: a manufacturing apparatus configured to process materials assigned by a sequence of lots; an apparatus controller configured to control the manufacturing apparatus and obtaining operational conditions of the manufacturing apparatus as apparatus information; a lot information input terminal configured to obtain process conditions of one of the lots as lot information; an apparatus information storage unit configured to store the apparatus information from the apparatus controller as an apparatus information database; a lot information storage unit configured to store the lot information from the lot information input terminal as a lot information database; and a cleaning determination unit configured to determine timing to perform a dry cleaning of the manufacturing apparatus based on the apparatus information database and the lot information database.
摘要:
A semiconductor device comprises a semiconductor substrate and a silicon nitride film formed on the semiconductor substrate. The silicon nitride film is substantially free from an Si—H bond and has an Si—H density per unit area of 1×1015 cm−2 or less.
摘要翻译:半导体器件包括形成在半导体衬底上的半导体衬底和氮化硅膜。 氮化硅膜基本上不含Si-H键,并且每单位面积的Si-H密度为1×10 15 cm -2以下。
摘要:
A deep trench is formed in a silicon substrate. The inner surface of the trench is next coated with a thin polycrystalline silicon film (liner film) so as not to close the trench. A silicon germanium film (node electrode) is then formed on the thin polycrystalline silicon film so as not to close the trench. Next, a heat treatment is performed on the silicon germanium film thereby to flow only the silicon germanium so that the trench is filled.
摘要:
A semiconductor device includes a semiconductor substrate having a trench on a surface thereof and an embedding member embedding the interior of the trench therewith. While the section of the trench when cut by a first plane perpendicular to the direction of the depth of the trench is defined as a first section and the section of the trench when cut by a second plane perpendicular to the direction of the depth of the trench and closer to the bottom of the trench than the first plane is defined as a second section, the area of the first section is smaller than that of the second section and a minimum radius of curvature of the first section is smaller than a minimum radius of curvature of the second section. As a result, it is possible to lessen the concentration of the electric field into the bottom of the trench.
摘要:
To change a plurality of trenches to one flat empty space by two-dimensionally forming the trenches on the surface of a semiconductor substrate and then applying heat treatment to the semiconductor substrate.
摘要:
To change a plurality of trenches to one flat empty space by two-dimensionally forming the trenches on the surface of a semiconductor substrate and then applying heat treatment to the semiconductor substrate.